CI: Test curl net accessor

Author: HaarigerHarald

.github/workflows/tests.yml

@@ -71,7 +71,7 @@ jobs:
           cmake -E env CXXFLAGS="-fPIC"
           cmake -E env CFLAGS="-fPIC" 
           cmake
-          -Dnetwork-accessor=socket
+          -Dnetwork-accessor=curl
           -Dtranscoder=iconv
           -DBUILD_SHARED_LIBS=OFF
           -DCMAKE_INSTALL_PREFIX="${{ github.workspace }}/${{ env.XERCES_C_INSTALL_DIR }}"